Краткое пояснение: Для образования отрицательной формы в Present Continuous необходимо добавить частицу "not" после вспомогательного глагола (am, is, are), а для вопросительной формы - поставить вспомогательный глагол перед подлежащим.
1. She is watching television at the moment.
- Отрицательная форма: She is not watching television at the moment.
- Вопросительная форма: Is she watching television at the moment?
2. They are playing football now.
- Отрицательная форма: They are not playing football now.
- Вопросительная форма: Are they playing football now?
3. My sister is writing a letter.
- Отрицательная форма: My sister is not writing a letter.
- Вопросительная форма: Is my sister writing a letter?
4. We are listening to the stereo.
- Отрицательная форма: We are not listening to the stereo.
- Вопросительная форма: Are we listening to the stereo?
5. They are talking to my friend.
- Отрицательная форма: They are not talking to my friend.
- Вопросительная форма: Are they talking to my friend?
6. Mary is sleeping.
- Отрицательная форма: Mary is not sleeping.
- Вопросительная форма: Is Mary sleeping?
7. You are listening to the radio.
- Отрицательная форма: You are not listening to the radio.
- Вопросительная форма: Are you listening to the radio?
8. He is having breakfast at the moment.
- Отрицательная форма: He is not having breakfast at the moment.
- Вопросительная форма: Is he having breakfast at the moment?
9. They are working now.
- Отрицательная форма: They are not working now.
- Вопросительная форма: Are they working now?
10. I am studying.
- Отрицательная форма: I am not studying.
- Вопросительная форма: Am I studying?
11. You are eating.
- Отрицательная форма: You are not eating.
- Вопросительная форма: Are you eating?
12. We are drinking coffee.
- Отрицательная форма: We are not drinking coffee.
- Вопросительная форма: Are we drinking coffee?
13. Michael is holding a book in his hand.
- Отрицательная форма: Michael is not holding a book in his hand.
- Вопросительная форма: Is Michael holding a book in his hand?
14. His friends are playing volley-ball.
- Отрицательная форма: His friends are not playing volley-ball.
- Вопросительная форма: Are his friends playing volley-ball?
15. I am planting trees.
- Отрицательная форма: I am not planting trees.
- Вопросительная форма: Am I planting trees?